Jillian Michaels, one of the most successful personal trainers in the US, reveals the six processes that underpin ageing - and how to keep them in check (you want to keep your telomeres happy).

‘The Biggest Loser’ star talks to Tim Samuels about awkward childhoods, the strained relationship with her father, and the particular psychology needed for lasting weight loss.

Brilliant Brains is a deep, deep - no holds - dive into the minds of some of the most fascinating thinkers out there. Find all the shows at karmacist.com/podcast.

Music by Natureboy - remixed by Mudd.

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